/* ==========================================================================
   STYLE: Copper Instrumentation on White
   Primary Colors:
     - Pure White: #FFFFFF
     - Charcoal: #303436
     - Aged Copper: #A87654
     - Mist Blue: #E9F0F1
   Aesthetic: Refined analog engineering instrument, precision dials, matte
   ========================================================================== */

:root {
  --color-white: #FFFFFF;
  --color-charcoal: #303436;
  --color-charcoal-muted: #5F666A;
  --color-charcoal-light: rgba(48, 52, 54, 0.08);
  --color-border: rgba(48, 52, 54, 0.16);
  --color-border-strong: #303436;
  --color-aged-copper: #A87654;
  --color-copper-dark: #875736;
  --color-copper-light: rgba(168, 118, 84, 0.12);
  --color-copper-subtle: rgba(168, 118, 84, 0.05);
  --color-mist-blue: #E9F0F1;
  --color-mist-blue-subtle: #F5F9FA;
  --color-mist-blue-dark: #D4E1E4;

  --font-heading: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-mono: "SF Mono", "Consolas", "Liberation Mono", "Menlo", monospace;

  --h1-size: clamp(33px, 4.5vw, 47px);
  --body-size: 18px;
  --container-max: 1200px;
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 10px;
}

/* Reset & Box Sizing */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  font-size: var(--body-size);
  font-weight: 400;
  line-height: 1.75;
  color: var(--color-charcoal);
  background-color: var(--color-white);
  overflow-x: hidden;
  overflow-wrap: anywhere;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  color: var(--color-charcoal);
  line-height: 1.3;
  margin-bottom: 0.75rem;
}

h1 {
  font-size: var(--h1-size);
  letter-spacing: -0.5px;
}

h2 {
  font-size: clamp(24px, 3vw, 32px);
  letter-spacing: -0.3px;
}

h3 {
  font-size: clamp(19px, 2.2vw, 22px);
}

p {
  margin-bottom: 1.2rem;
  color: var(--color-charcoal);
}

p.lead {
  font-size: 1.125rem;
  color: var(--color-charcoal-muted);
  line-height: 1.8;
}

a {
  color: var(--color-aged-copper);
  text-decoration: none;
  transition: color 0.2s ease, border-color 0.2s ease;
}

a:hover {
  color: var(--color-copper-dark);
}

code, pre, .font-mono {
  font-family: var(--font-mono);
}

img, svg {
  max-width: 100%;
  height: auto;
  display: block;
}

/* Layout Utilities */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: 20px;
  padding-right: 20px;
}

.section {
  padding-top: 80px;
  padding-bottom: 80px;
  position: relative;
}

.section-contrast {
  background-color: var(--color-mist-blue-subtle);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.section-instrument {
  background-color: var(--color-mist-blue);
  border-top: 1px solid rgba(48, 52, 54, 0.12);
  border-bottom: 1px solid rgba(48, 52, 54, 0.12);
}

.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 50px auto;
}

.section-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--color-aged-copper);
  background-color: var(--color-copper-light);
  border: 1px solid rgba(168, 118, 84, 0.3);
  padding: 4px 12px;
  border-radius: var(--radius-sm);
  margin-bottom: 14px;
}

/* Specification / Instrument Badge */
.spec-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-charcoal);
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  padding: 3px 10px;
  border-radius: var(--radius-sm);
}

.spec-badge.copper {
  border-color: var(--color-aged-copper);
  color: var(--color-aged-copper);
  background-color: var(--color-copper-subtle);
}

/* Buttons */
.btn-group {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: center;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-heading);
  font-size: 16px;
  font-weight: 600;
  padding: 12px 26px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.btn-primary {
  background-color: var(--color-aged-copper);
  color: var(--color-white);
  border-color: var(--color-aged-copper);
}

.btn-primary:hover {
  background-color: var(--color-copper-dark);
  border-color: var(--color-copper-dark);
  color: var(--color-white);
}

.btn-secondary {
  background-color: var(--color-white);
  color: var(--color-charcoal);
  border-color: var(--color-charcoal);
}

.btn-secondary:hover {
  background-color: var(--color-mist-blue);
  color: var(--color-charcoal);
}

.btn-sm {
  padding: 8px 16px;
  font-size: 14px;
}

.btn-block {
  width: 100%;
}

/* ==========================================================================
   HEADER & NAVIGATION
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
  transition: border-color 0.2s ease;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.brand-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 20px;
  color: var(--color-charcoal);
  text-decoration: none;
}

.brand-symbol {
  width: 32px;
  height: 32px;
  border: 1.5px solid var(--color-charcoal);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-mist-blue);
}

.nav-desktop {
  display: none;
}

@media (min-width: 1024px) {
  .nav-desktop {
    display: flex;
    align-items: center;
    gap: 24px;
  }
}

.nav-link {
  font-size: 15px;
  font-weight: 500;
  color: var(--color-charcoal);
  text-decoration: none;
  padding: 6px 4px;
  border-bottom: 2px solid transparent;
  transition: all 0.2s ease;
}

.nav-link:hover {
  color: var(--color-aged-copper);
  border-bottom-color: var(--color-aged-copper);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.mobile-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 38px;
  height: 38px;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  padding: 8px;
}

@media (min-width: 1024px) {
  .mobile-toggle {
    display: none;
  }
}

.mobile-toggle span {
  display: block;
  height: 2px;
  width: 100%;
  background-color: var(--color-charcoal);
  transition: all 0.25s ease;
}

.mobile-toggle.is-active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.mobile-toggle.is-active span:nth-child(2) {
  opacity: 0;
}

.mobile-toggle.is-active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile Nav Drawer */
.mobile-nav {
  display: none;
  background-color: var(--color-white);
  border-bottom: 1px solid var(--color-border);
  padding: 16px 20px 24px 20px;
}

.mobile-nav.is-open {
  display: block;
}

.mobile-nav-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 18px;
}

.mobile-nav-link {
  display: block;
  font-size: 16px;
  font-weight: 500;
  color: var(--color-charcoal);
  padding: 8px 0;
  border-bottom: 1px solid rgba(48, 52, 54, 0.08);
}

/* ==========================================================================
   HERO SECTION: Left Copy / Right Network Dashboard
   ========================================================================== */
.hero-section {
  padding-top: 60px;
  padding-bottom: 70px;
  background: linear-gradient(180deg, var(--color-white) 0%, var(--color-mist-blue-subtle) 100%);
  border-bottom: 1px solid var(--color-border);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  align-items: center;
}

@media (min-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1.05fr 0.95fr;
    gap: 48px;
  }
}

.hero-copy {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.hero-meta-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
}

.hero-badges-row {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--color-charcoal-muted);
  margin-top: 10px;
}

.hero-badges-row span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.hero-badges-row svg {
  color: var(--color-aged-copper);
}

/* Analog Instrument Dashboard */
.instrument-panel {
  background-color: var(--color-white);
  border: 1.5px solid var(--color-charcoal);
  border-radius: var(--radius-md);
  padding: 20px;
  box-shadow: 0 4px 18px rgba(48, 52, 54, 0.05);
  position: relative;
}

.panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 16px;
}

.panel-title {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--color-charcoal);
  display: flex;
  align-items: center;
  gap: 8px;
}

.panel-title .indicator-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--color-aged-copper);
}

.panel-spec-id {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-charcoal-muted);
}

.instrument-svg-wrap {
  width: 100%;
  aspect-ratio: 4 / 3;
  background-color: var(--color-mist-blue-subtle);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

/* Animated copper route pulse (slow & calm) */
.copper-pulse-path {
  stroke: var(--color-aged-copper);
  stroke-width: 2.5;
  stroke-dasharray: 8 6;
  animation: copperRoutePulse 5s linear infinite;
}

@keyframes copperRoutePulse {
  0% {
    stroke-dashoffset: 0;
  }
  100% {
    stroke-dashoffset: -56;
  }
}

.panel-status-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  margin-top: 16px;
}

@media (min-width: 640px) {
  .panel-status-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.panel-cell {
  background-color: var(--color-mist-blue);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 8px 10px;
  text-align: center;
}

.panel-cell-label {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--color-charcoal-muted);
  text-transform: uppercase;
  margin-bottom: 2px;
}

.panel-cell-value {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--color-charcoal);
}

.panel-cell-value.copper {
  color: var(--color-aged-copper);
}

.panel-footer-note {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-charcoal-muted);
  text-align: center;
  margin-top: 12px;
  line-height: 1.4;
}

/* ==========================================================================
   THREE ADVANTAGES (BENEFITS): Alternating Diagram/Text Rows
   ========================================================================== */
.benefits-list {
  display: flex;
  flex-direction: column;
  gap: 50px;
}

.benefit-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  align-items: center;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 30px;
}

@media (min-width: 1024px) {
  .benefit-row {
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    padding: 40px;
  }

  .benefit-row.reverse {
    direction: rtl;
  }

  .benefit-row.reverse > * {
    direction: ltr;
  }
}

.benefit-diagram {
  background-color: var(--color-mist-blue-subtle);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 240px;
}

.benefit-content {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.benefit-index {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--color-aged-copper);
}

.benefit-specs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 8px;
}

/* ==========================================================================
   NODES SECTION: World-Region Strip
   ========================================================================== */
.region-strip-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

@media (min-width: 640px) {
  .region-strip-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .region-strip-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.region-card {
  background-color: var(--color-white);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  position: relative;
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.region-card:hover {
  border-color: var(--color-aged-copper);
}

.region-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.region-flag-code {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--color-charcoal);
  display: flex;
  align-items: center;
  gap: 6px;
}

.region-status-pill {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-aged-copper);
  background-color: var(--color-copper-light);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
}

.region-name {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-charcoal);
}

.region-dial-svg {
  width: 100%;
  height: 80px;
}

.region-specs-list {
  list-style: none;
  font-size: 14px;
  color: var(--color-charcoal-muted);
  display: flex;
  flex-direction: column;
  gap: 6px;
  border-top: 1px dashed var(--color-border);
  padding-top: 10px;
}

.region-specs-list li {
  display: flex;
  justify-content: space-between;
}

.region-specs-list .spec-k {
  color: var(--color-charcoal-muted);
}

.region-specs-list .spec-v {
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--color-charcoal);
}

/* ==========================================================================
   AI & STREAMING SCENARIOS: Contrasting Broad Sections
   ========================================================================== */
.scenario-block {
  background-color: var(--color-white);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 36px 24px;
  margin-bottom: 40px;
}

@media (min-width: 1024px) {
  .scenario-block {
    padding: 48px;
  }
}

.scenario-header {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 28px;
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 20px;
}

@media (min-width: 768px) {
  .scenario-header {
    flex-direction: row;
    justify-content: space-between;
    align-items: flex-end;
  }
}

.scenario-title-group h3 {
  margin-bottom: 4px;
}

.scenario-title-group p {
  color: var(--color-charcoal-muted);
  margin-bottom: 0;
  font-size: 16px;
}

.scenario-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

@media (min-width: 640px) {
  .scenario-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .scenario-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.app-card {
  background-color: var(--color-mist-blue-subtle);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.app-card-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.app-card-name {
  font-weight: 700;
  font-size: 17px;
  color: var(--color-charcoal);
}

.app-card-tag {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-aged-copper);
}

.app-card-desc {
  font-size: 14.5px;
  color: var(--color-charcoal);
  line-height: 1.6;
  margin-bottom: 0;
}

.app-card-specs {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-charcoal-muted);
  margin-top: auto;
  padding-top: 8px;
  border-top: 1px solid rgba(48, 52, 54, 0.08);
}

/* ==========================================================================
   PRICING SECTION: 4-5 Tiers with Exactly One "推荐套餐"
   ========================================================================== */
.pricing-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  align-items: stretch;
}

@media (min-width: 640px) {
  .pricing-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .pricing-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.pricing-card {
  background-color: var(--color-white);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 30px 22px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  transition: border-color 0.2s ease;
}

.pricing-card.recommended {
  border-color: var(--color-aged-copper);
  border-width: 2px;
  background-color: #FFFDFB;
  box-shadow: 0 4px 20px rgba(168, 118, 84, 0.08);
}

.recommend-tag {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background-color: var(--color-aged-copper);
  color: var(--color-white);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1px;
  padding: 3px 12px;
  border-radius: 12px;
  white-space: nowrap;
}

.plan-head {
  padding-bottom: 16px;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 16px;
}

.plan-name {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-charcoal);
  margin-bottom: 4px;
}

.plan-desc {
  font-size: 13.5px;
  color: var(--color-charcoal-muted);
  line-height: 1.5;
  margin-bottom: 12px;
}

.plan-price-box {
  display: flex;
  align-items: baseline;
  gap: 4px;
}

.plan-price-currency {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-charcoal);
}

.plan-price-num {
  font-family: var(--font-mono);
  font-size: 34px;
  font-weight: 700;
  color: var(--color-charcoal);
  line-height: 1;
}

.plan-price-cycle {
  font-size: 13px;
  color: var(--color-charcoal-muted);
}

.plan-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 14.5px;
  color: var(--color-charcoal);
  margin-bottom: 24px;
  flex-grow: 1;
}

.plan-features li {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  line-height: 1.45;
}

.plan-features svg {
  flex-shrink: 0;
  width: 16px;
  height: 16px;
  color: var(--color-aged-copper);
  margin-top: 2px;
}

.pricing-disclosure {
  background-color: var(--color-mist-blue);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 16px 20px;
  margin-top: 36px;
  font-size: 13.5px;
  color: var(--color-charcoal-muted);
  line-height: 1.6;
}

/* ==========================================================================
   SEO ARTICLES SECTION: 9 Specification Cards (3/2/1 Columns)
   ========================================================================== */
.articles-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

@media (min-width: 640px) {
  .articles-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .articles-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.spec-article-card {
  background-color: var(--color-white);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 16px;
  text-decoration: none;
  transition: border-color 0.2s ease, transform 0.2s ease;
  position: relative;
}

.spec-article-card:hover {
  border-color: var(--color-aged-copper);
  transform: translateY(-2px);
}

.article-spec-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px dashed var(--color-border);
  padding-bottom: 10px;
}

.article-spec-num {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  color: var(--color-aged-copper);
}

.article-category {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-charcoal-muted);
  background-color: var(--color-mist-blue);
  padding: 2px 8px;
  border-radius: var(--radius-sm);
}

.article-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-charcoal);
  line-height: 1.45;
  margin-bottom: 8px;
}

.spec-article-card:hover .article-title {
  color: var(--color-aged-copper);
}

.article-excerpt {
  font-size: 14.5px;
  color: var(--color-charcoal-muted);
  line-height: 1.6;
  margin-bottom: 0;
  flex-grow: 1;
}

.article-spec-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-charcoal-muted);
  border-top: 1px solid var(--color-border);
  padding-top: 12px;
}

.article-read-btn {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  color: var(--color-aged-copper);
  font-weight: 600;
}

/* ==========================================================================
   TESTIMONIALS: 3-6 Verified / Editorial Sample Reviews
   ========================================================================== */
.testimonials-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

@media (min-width: 640px) {
  .testimonials-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .testimonials-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.testimonial-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 14px;
}

.testimonial-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.testimonial-author {
  font-weight: 700;
  font-size: 15px;
  color: var(--color-charcoal);
}

.testimonial-role {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-charcoal-muted);
}

.testimonial-text {
  font-size: 15px;
  color: var(--color-charcoal);
  line-height: 1.65;
  margin-bottom: 0;
  font-style: normal;
}

.testimonial-badge {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-aged-copper);
  border-top: 1px dashed var(--color-border);
  padding-top: 10px;
}

/* ==========================================================================
   FAQ ACCORDION
   ========================================================================== */
.faq-list {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.faq-item {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  transition: border-color 0.2s ease;
}

.faq-item[open] {
  border-color: var(--color-aged-copper);
}

.faq-summary {
  padding: 18px 22px;
  font-size: 17px;
  font-weight: 700;
  color: var(--color-charcoal);
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  user-select: none;
}

.faq-summary::-webkit-details-marker {
  display: none;
}

.faq-icon {
  width: 20px;
  height: 20px;
  color: var(--color-aged-copper);
  transition: transform 0.2s ease;
  flex-shrink: 0;
}

.faq-item[open] .faq-icon {
  transform: rotate(180deg);
}

.faq-body {
  padding: 0 22px 20px 22px;
  font-size: 15.5px;
  color: var(--color-charcoal);
  line-height: 1.7;
  border-top: 1px solid rgba(48, 52, 54, 0.08);
  padding-top: 14px;
}

/* ==========================================================================
   FOOTER: Independent Pages + PBN Links
   ========================================================================== */
.site-footer {
  background-color: var(--color-white);
  border-top: 2px solid var(--color-charcoal);
  padding-top: 60px;
  padding-bottom: 40px;
  font-size: 15px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  margin-bottom: 48px;
}

@media (min-width: 640px) {
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .footer-grid {
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 48px;
  }
}

.footer-col h4 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--color-charcoal);
  font-family: var(--font-heading);
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a {
  color: var(--color-charcoal-muted);
  font-size: 14.5px;
}

.footer-links a:hover {
  color: var(--color-aged-copper);
}

/* PBN matrix links styled with prominent, calibrated font highlighting */
.pbn-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.pbn-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--color-aged-copper) !important;
  font-weight: 600;
  font-size: 14.5px;
  border-bottom: 1px dashed rgba(168, 118, 84, 0.4);
  padding-bottom: 2px;
}

.pbn-link:hover {
  color: var(--color-copper-dark) !important;
  border-bottom-color: var(--color-copper-dark);
}

.footer-bottom {
  border-top: 1px solid var(--color-border);
  padding-top: 28px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  align-items: center;
  text-align: center;
  font-size: 13.5px;
  color: var(--color-charcoal-muted);
}

@media (min-width: 768px) {
  .footer-bottom {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }
}

/* ==========================================================================
   ARTICLE PAGE SPECIFIC STYLES
   ========================================================================== */
.breadcrumb-nav {
  padding: 20px 0;
  border-bottom: 1px solid var(--color-border);
  font-size: 14px;
}

.breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  list-style: none;
}

.breadcrumb-item a {
  color: var(--color-charcoal-muted);
}

.breadcrumb-item.active {
  color: var(--color-charcoal);
  font-weight: 600;
}

.breadcrumb-separator {
  color: var(--color-charcoal-muted);
}

.article-header-wrap {
  padding: 40px 0 30px 0;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 40px;
}

.article-meta-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--color-charcoal-muted);
  margin-bottom: 16px;
}

.article-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  padding-bottom: 80px;
}

@media (min-width: 1024px) {
  .article-layout {
    grid-template-columns: 1fr 320px;
    gap: 48px;
  }
}

.article-content {
  font-size: 18px;
  line-height: 1.85;
  color: var(--color-charcoal);
}

.article-content h2 {
  margin-top: 48px;
  margin-bottom: 18px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--color-border);
}

.article-content h3 {
  margin-top: 32px;
  margin-bottom: 14px;
}

.article-content ul, .article-content ol {
  margin-left: 24px;
  margin-bottom: 1.5rem;
}

.article-content li {
  margin-bottom: 8px;
}

.article-content blockquote {
  border-left: 4px solid var(--color-aged-copper);
  background-color: var(--color-mist-blue-subtle);
  padding: 16px 20px;
  margin: 24px 0;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: 16.5px;
  color: var(--color-charcoal);
}

.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 28px 0;
  font-size: 15px;
}

.article-content th, .article-content td {
  border: 1px solid var(--color-border);
  padding: 12px 14px;
  text-align: left;
}

.article-content th {
  background-color: var(--color-mist-blue);
  font-weight: 700;
  font-family: var(--font-heading);
}

.article-content tr:nth-child(even) {
  background-color: var(--color-mist-blue-subtle);
}

.article-cta-box {
  background: var(--color-mist-blue);
  border: 1.5px solid var(--color-aged-copper);
  border-radius: var(--radius-md);
  padding: 30px;
  margin: 40px 0;
  text-align: center;
}

.article-sidebar {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.sidebar-widget {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 22px;
}

.sidebar-widget h4 {
  font-size: 16px;
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 10px;
  margin-bottom: 14px;
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}